Update documentation.

docs/source/usage/parameters.rst

@@ -411,6 +411,7 @@ Lattice Elements
             * ``<element_name>.repeat_x`` (``float``, in meters) horizontal period for repeated aperture masking (inactive by default)
             * ``<element_name>.repeat_y`` (``float``, in meters) vertical period for repeated aperture masking (inactive by default)
             * ``<element_name>.shape`` (``string``) shape of the aperture boundary: ``rectangular`` (default) or ``elliptical``
+            * ``<element_name>.action`` (``string``) action of the aperture domain: ``transmit`` (default) or ``absorb``
             * ``<element_name>.dx`` (``float``, in meters) horizontal translation error
             * ``<element_name>.dy`` (``float``, in meters) vertical translation error
             * ``<element_name>.rotation`` (``float``, in degrees) rotation error in the transverse plane

docs/source/usage/python.rst

@@ -953,6 +953,7 @@ This module provides elements for the accelerator lattice.
    :param repeat_x: horizontal period for repeated aperture masking (inactive by default) (meter)
    :param repeat_y: vertical period for repeated aperture masking (inactive by default) (meter)
    :param shape: aperture boundary shape: ``"rectangular"`` (default) or ``"elliptical"``
+   :param action: aperture domain action: ``"transmit"`` (default) or ``"absorb"``
    :param dx: horizontal translation error in m
    :param dy: vertical translation error in m
    :param rotation: rotation error in the transverse plane [degrees]
@@ -962,6 +963,10 @@ This module provides elements for the accelerator lattice.
 
       aperture type (rectangular, elliptical)
 
+   .. py:property:: action
+
+      aperture type (transmit, absorb)
+
    .. py:property:: xmax
 
       maximum horizontal coordinate